A more complex take on the braille alphabet to encrypt messages (by me)3yr ⋅ Donnerkiefer ⋅ r/cryptography
Brother found this on the front door of school he works at. Anyone have an idea of what it says? Found in Oregon, USA. You are the guys for this job!3yr ⋅ TWO-PUMP-CHUMP ⋅ r/cryptography
What’s the intuition behind Diffi-Hellman being able to generate a Shared Secret Key?1yr ⋅ JaseLZS ⋅ r/cryptography
I thought this might be something you guys would like to see. Grandfather worked at NSA as a code breaker for 30 years4yr ⋅ SarcasticMatt ⋅ r/cryptography
The Coords Cipher, a simple little cipher I made (or potentially re-invented, more info in comments)2yr ⋅ EggusEggboy ⋅ r/cryptography
I found this on a 108 year old postcard that my grandma had, and have been trying to run it through some websites, any help?3yr ⋅ Mattsoot ⋅ r/cryptography
I’m confused about this question. Is there an error in this practice exam or is this specifically NOT a digital signature?1yr ⋅ flipmcf ⋅ r/cryptography
Cheat sheet for XOR, AND and OR (if you want to suggest any tell me in the comments)4yr ⋅ decrypted_ ⋅ r/cryptography
Hi, i’m reading « New directions in cryptography » paper and there is a sentence i can’t understand if anyone can help me i’d be happy with it. More particularly « restricting the form of the challenges » meaning. Ty.2yr ⋅ Own-Doubt-8359 ⋅ r/cryptography
Shor’s—measure the state? How? Every example I see skips this part. In the following they know the period is 6 and just sub it in, but that’s what we’re trying to find. Please help. I’ve been losing my mind over this for days.1yr ⋅ problypoopingrn ⋅ r/cryptography
Years ago, I worked at a private school. A colleague who was in to cryptography and lockpicking left this message in the yearbook and refused to tell anyone what it meant, saying it should be easy to solve. I'm terrible at this kind of thing and never solved it. Help please. Transcript in comments.4yr ⋅ FargoniusMaximus ⋅ r/cryptography
I’m taking a blockchain class and I was hoping someone here could help explain some of these questions for me.2yr ⋅ Glum-Cycle1874 ⋅ r/cryptography
I read that bcrypt is a slow enough hashing algorithm to be used for storing passwords but I would like to hear whether or not you agree. You can also see my Python implementation as an image mostly copied from PyCryptodome docs.1yr ⋅ DotDemon ⋅ r/cryptography
I figured you guys might be interested in this, found it in my grandfathers place.3yr ⋅ k1llerk1ng ⋅ r/cryptography
Trying to see how good my cypher is, off work tomorrow and might post more then.4yr ⋅ -lavant- ⋅ r/cryptography
Found this a few weeks ago in parents back room while helping them clean it out. Grandfather worked there for 30 years Figured you guys might like it. I don't know the story behind it grandfather passed away 25 years ago when I was pretty young5yr ⋅ SarcasticMatt ⋅ r/cryptography
I used to do these in school and now I cannot figure it out for my life. Can someone explain to me how to solve this?2yr ⋅ jaytorz ⋅ r/cryptography
I'm currently learning about cryptography as I was wondering if anyone could suggest a way to solve this, without giving me the answer5yr ⋅ Banoono ⋅ r/cryptography
Strange .onion site, it’s a hell of a rabbit hole, and has several QR code’s linked to a bitcoin wallet with over 100 mil USD. Seems to be the main “code” they use on the website. Need help cracking this for possible cash prize? Also posted on r/codes so if you seein this again that’s why.4yr ⋅ Shoudabobbin ⋅ r/cryptography
Hi, can somebody please help me with getting an overview on how all of these types of ciphers arrange? Thanks a lot 🙏2yr ⋅ sys_interrupt ⋅ r/cryptography
A code graffitied in my University alongside it's irl coordinates4yr ⋅ annoying_fruit ⋅ r/cryptography
Can somebody help me to decode this message? All I know that it's written in English5yr ⋅ BerDani ⋅ r/cryptography
The only natural thing i can think off that can produce random values5yr ⋅ kenig0x33 ⋅ r/cryptography
I have been reading this last weeks this book and it is pretty amazing how cryptography works and how smarter people cracks it5yr ⋅ manolesparta ⋅ r/cryptography
Have any of you implemented this concept for secure email communication?2yr ⋅ Hope1995x ⋅ r/cryptography
Kid is doing some basic cryptography for school, would you happen to what kind of encryption this is? (Sorry if this the wrong place to ask)5yr ⋅ Knoodli ⋅ r/cryptography
Please help, I tried vegneeres and ceases cipher but skipping won't work, even association with letters isn't working either... he said the key was in the eye can someone help me? Please7yr ⋅ unfadedthoughts ⋅ r/cryptography
Salts don't change symmetric encryption into hash functions... right?6yr ⋅ KernelDeimos ⋅ r/cryptography
In 2017, Jeff Mangum of Neutral Milk Hotel released a series of encoded drawings called The Book Cipher Sings. The drawings hint to a 3rd double album but the code remains unbroken.5yr ⋅ ef22 ⋅ r/cryptography
Trying to help my cousin decrypt this sentence at the bottom, we can’t figure it out, any help?6yr ⋅ GiraffeGoddess2 ⋅ r/cryptography
I’m a municipal code enforcement officer for a small town. I received this in response to a code violation letter I mailed to a resident. Any assistance on whether this is a code or just meaningless drivel would be much appreciated!5yr ⋅ CleverSobriquette ⋅ r/cryptography
My university has this walkway that’s dotted with bricks graduates have paid to engrave. Saw this one on a walk tonight. Can anyone elucidate me? What does it say, and what is it using to say it?5yr ⋅ Skraporc ⋅ r/cryptography
hello cryptographers, the Adventure Time subreddit needs help deciphering these symbols.12yr ⋅ _the__doctor_ ⋅ r/cryptography
Need help solving this please!!!! Its for a competition and i can't solve this5yr ⋅ wEirDofromUraNuS ⋅ r/cryptography
I'm not sure if this is the right sub, but there is text in here that I want to get out but I have no clue what to do.5yr ⋅ UcHiHa_0bIt0 ⋅ r/cryptography
Someone has claimed to receive these messages through a sound in the sky using a ham radio. Any ideas?11yr ⋅ AJ47 ⋅ r/cryptography
Was told to ask this here. Weird symbols on the bicycle trail behind my house. x-post from r/whatisthisthing 12yr ⋅ electromonkey222 ⋅ r/cryptography
This is a death threat from the leader of Brazil's biggest crime organisation to a federal judge. Can someone help me out decoding this?5yr ⋅ mathiaskuhnen ⋅ r/cryptography
So anyone else here fool around with manual ciphers? Here is a strip version of the M-94 wheel cipher that I made. Plaintext is on the bottom line.7yr ⋅ dittybopper_05H ⋅ r/cryptography
Some friends found this coded message written on a wall near a bus station in Nicaragua. Any ideas?10yr ⋅ eichward ⋅ r/cryptography
Found these on my doorstep with a note. I speak fluent Hebrew, but have no idea what it says.12yr ⋅ radrler ⋅ r/cryptography
Have some steganography question. How do I solve this? More interested in knowing how to solve this.8yr ⋅ ncbradford91 ⋅ r/cryptography
Found this in front of my car tonight. Any idea what it means?11yr ⋅ Kitten_Slayer00 ⋅ r/cryptography
Girlfriend sent me this. Any help? She said there's a message hidden.11yr ⋅ carlito2003 ⋅ r/cryptography
A page found in a book at work. Can anyone help me solve it or point me in the right direction?6yr ⋅ [deleted] ⋅ r/cryptography
I found these two notes tucked inside a library book, along with an old movie ticket. Can someone please help me decipher them?12yr ⋅ MKwitch ⋅ r/cryptography
Hey r/Cryptography! Found these secret codes and would love some help deciphering them! (more info in comments)11yr ⋅ ninjacart ⋅ r/cryptography
Someone want to help/explain this to me? I'm a high school student interested in Cryptography. Can someone explain #'s 4 and 110yr ⋅ imnotahacker ⋅ r/cryptography
A friend and I found what seem to be a cryptographic message on a 5 dollar bill, help solve?11yr ⋅ [deleted] ⋅ r/cryptography
My co-worker writes all his notes in a weird cypher. (More info in comments)10yr ⋅ Dragonqueen4000 ⋅ r/cryptography
Unknown code on library wall... can anyone crack / tell what kind?11yr ⋅ danfoster3141 ⋅ r/cryptography
My friend wrote me a message in scrambled letters, but said I should be able to figure it out. Help!12yr ⋅ Man_Flute ⋅ r/cryptography
The dots at the bottom of this image, is that supposed to be a computer punch card or does it say something?11yr ⋅ [deleted] ⋅ r/cryptography
Weird encoded texts from Google Voice number. But what does it mean? (I got no clue)8yr ⋅ BluudLust ⋅ r/cryptography
This whiteboard in our school's student lounge apparently caused a huge fight between a good handful of our students and we don't know what any of this means. Please help us decipher!11yr ⋅ ISlangKnowledge ⋅ r/cryptography
Crytographic apocalyptic letter from 1798. Found in a box at wifes parents. Not sure if authentic or not but it seems interesting.12yr ⋅ ducknut ⋅ r/cryptography
Hello /r/cryptography, a Dutch friend of mine gave me this encryption for my birthday and I am out of clues on how to solve it, does anyone have an idea?7yr ⋅ lucb2000 ⋅ r/cryptography
What cipher is this? I been looking for an hour and I can't find out. It's also used for writing secrete notes.12yr ⋅ BKAA ⋅ r/cryptography
Can you help me out finding out what this code means? And also if the symbols could mean something.12yr ⋅ zaraphiston ⋅ r/cryptography
Found this notebook in my study hall. I haven't been able to find a correct language if it is one. Anyone translate/decipher or direct me to an appropriate sub?11yr ⋅ DJSwenzo444 ⋅ r/cryptography
Found this in an elevator in Georgia. These images correspond to floor numbers. I know it's not crypto, per say, still I have no idea what these pics might mean. Can anyone help?10yr ⋅ [deleted] ⋅ r/cryptography
We had to make a Vigenere Cipher for a classmate, I think I went over board.12yr ⋅ tomagig ⋅ r/cryptography
Hi! found this on VK.com (russian facebook). what it could be, some botnet or something else?9yr ⋅ drv42 ⋅ r/cryptography
Cipher I know, but can't put my finger on the name.. Tried deciphering it on my own, but it came out as gibberish. Am I getting trolled? 12yr ⋅ Daerog ⋅ r/cryptography
Cyrillic cipher. I'm trying to learn the alphabet as fast as it takes to access wikipedia.11yr ⋅ oldkentucky ⋅ r/cryptography
[xpost from /r/gaming] Upon closer inspection of the Steam Autumn Sale background, I found these dots. Does this translate in morse code to something?12yr ⋅ jbondhus ⋅ r/cryptography
Who can help me decrypt this picture? Steganography was used. It could very well be in Dutch.12yr ⋅ Madmastar ⋅ r/cryptography
Need some assistance with this code, anyone have any ideas what it is?12yr ⋅ [deleted] ⋅ r/cryptography
